Automatic safety device.



W. D. GELSER.

AUTOMATIC SAFETY DEVICE.

APPLICATION FILED OOT. 5,1908.

922,881, Patented May 25,1909

UNITED TATE PATENT @FFIQE.

WALTER D. GELSER, OF HUNT, NEW YORK.

I AUTOMATIC SAFETY DEVICE.

Application filed October 5,

To all whom it may concern Be it known that 1, WALTER D. GELsnR, a citizen .of the United States, residing at Hunt, in the county of Livingston and. State of New York, have invented certain new and useful Improvements in Automatic Safety Devices; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to automatic safety devices and particularly to that type which are used in connection with the water glass of a steam boiler.

When using a water glass to determine the amount of water in the boiler, it is necessary to use a check valve between the boiler and the glass at both ends thereof so that when the glass becomes broken from any cause whatever, the steam or water will not be forced out of the boiler before the glass can be repaired.

It is the object of my invention to provide such a check valve and to avoid the difficulties heretofore found in such structures in that it was found to be exceedingly diflicult to restore the check valve to normal after a new glass had been inserted.

Another object of the invention is the provision of means by which the engineer may close off all connection to the glass irrespective of the action of the check valve.

With the foregoing and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts, as will be more fully de scribed and particularly pointed out in the appended claim.

In the accompanying drawings, Figure 1 is a vertical sectional view showing the application of the device to a boiler, and, Fig. 2 is a section taken transverse to the section of Fig. 1 on the line 22 of Fig. 1.

In the drawings, 1 represents the boiler which is shown in section. Projecting from the boiler and threaded thereinto are a pair of nipples 2, which have secured to their outer ends the check valve casings 3, one for the upper end of the glass and one for the lower end of the glass. Each casing is provided near its outer end with a transversely extending nipple 4 in which the glass 5 is seated surrounded by suitable packing 6 which is held in place by the clamp nuts 7.

The main part of the casing is formed into Specification of Letters Patent.

Patented May 25, 1909.

1908. Serial No. 456,210.

a chamber 8 in which the check valve 9 is pivoted as will be hereinafter described, and leading from the chamber 8 into a similar chamber 10 is the outlet port 11, which is closed by the vertical flange 12 of the check valve when the glass is broken. This check valve has passing through its corner, a pin 13 which is journaled in sockets 14 formed in suitable plugs 15 threaded into the side of the casing adjacent the port 11.

Under normal conditions, the horizontal flange of the check 9 being heavier than the vertical flange 12, the check is held away from the opening in the port 11 and thus said port remains open to the chamber 10 and to the glass 5. However, when the glass becomes broken, the check flies up by reason of the unequal pressure and closes the port in each casing, thus effectually preventing any excessive loss of water 01' steam.

The outer end of the casing adjoining the chamber 10 is threaded to receive a plug 16 which is provided with a threaded nipple 17 adapted to receive the packing 18 which is clamped in position around the operating shaft 19 by a suitable nut 20. The operating shaft is threaded upon its body to engage with a threaded aperture formed in the plug 1.6 and beyond this is widened into the form of a valve disk 21, which is adapted to close the port 11 from the opposite side of the partition which divides the chambers 8 and 10. A suitable extension 22 is carried upon the operating shaft so that, when the same is forced. forward by manipulation of the hand wheel 23, the check valve 9 is engaged by the extension and thrown out of closed position.

The upper part of each casing over the chamber 8 is provided with a hand hold plug 24 and each casing is provided on its under side with two drip cocks 25 and 26, the former being in communication with the chamber 10 and the latter being in communication with the chamber 8 so that each chamber may be readily cleaned of any sediment which may collect therein.

It will be noticed that the nipples 2 have their channel which leads into the chamber 8 tapering so that the force of the steam or water is projected directly against the vertical flange of the check valve, thus, when the glass becomes broken, the check valve is immediately forced upward to close the opening 11 and prevent any excessive loss of steam or water. After the check valve has been replaced, the operating shaft 19 is revolved and the projection 22 engages the check valves and throws them back to normal, thus permitting the steam and water to again enter the glass. If it is desired to out off steam and water from the glass, lxfi operating shafts 19 may be operated to place the valve disk 21 against its seat in the partition between the two chambers so as to close the port 11. The drip cock 25 may then be operated to relieve the glass of any pressure or fluid therein.

From the foregoing description taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of the invention as defined in the appended claim.

' I claim as my invention:

In combination with a boiler, a pair of casings communicating therewith through inlet ports, said casings having outlet ports, a water glass connected to said outlet ports, a partition'in each casing having a channel forming a communication from the inlet port to the glass, plugs threaded in the opposite sides of the casing and having sockets, check valves provided with pins to engage the sockets in the plugs whereby they are pivotally mounted in the casing and adapted to automatically close the channels upon the rupture of the glass, means threaded into the casing for engaging the check valves to return them to normal position, and valve disks carried by said means for closing the channels irrespective of the action of the check valves, said means comprising two independent members.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WALTER D. GELsERQ 

